Part of PatternLanguageForTheSocialNetwork

When people click on things, the bigger they are, the easier they are to hit. Many naive designers choose elegantly thin graphical buttons or custom scroll bars because the look of these things is lighter on the page. But they make interacting more awkward.

The negative effects of clunky interaction far outweigh the positives of a beautiful look.

Web design is like furniture design. Feeling comfortable is more important than looking good.